147438979 has 2 divisors, whose sum is σ = 147438980. Its totient is φ = 147438978.

The previous prime is 147438961. The next prime is 147438983. The reversal of 147438979 is 979834741.

147438979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (979834741) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147438979 is a prime.

It is not a weakly prime, because it can be changed into another prime (147438079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73719489 + 73719490.

It is an arithmetic number, because the mean of its divisors is an integer number (73719490).

Almost surely, 2^147438979 is an apocalyptic number.

147438979 is a deficient number, since it is larger than the sum of its proper divisors (1).

147438979 is an equidigital number, since it uses as much as digits as its factorization.

147438979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 52.

The square root of 147438979 is about 12142.4453467990. The cubic root of 147438979 is about 528.2880313125.

The spelling of 147438979 in words is "one hundred forty-seven million, four hundred thirty-eight thousand, nine hundred seventy-nine".